10 Obscene Hand Gestures From Around the World

Among all of the possible hand gestures that can be misinterpreted around the world, the chin flick may be the least confusing. So if you have a habit of flicking your chin while you talk, don't sweat it too much. In much of Italy, people will make the gesture — which involves placing the fingertips of one hand under your chin, pointing at your neck, then flicking them out towards the person with whom you're speaking — to indicate they couldn't care less (about you, what you're saying, your dog, the scrape on your pinkie). Frankly, my dear, they just don't give a damn. It can also mean they're positively not willing to do something [source: Marchetti].

In Northern Italy, France, Belgium and Tunisia, the chin flick can be used to tell someone to get lost (in a little bit more aggressive language than this) [source: Heddleston]. And speaking of aggressive, if someone wants to be quite emphatic about their intended message, they will make the gesture quite forcefully.